 <g  class="pane-node">
        <foreignObject width="180" height="50">
          <body xmlns="http://www.w3.org/1999/xhtml">
            <div  class="pane-node-content">
              <span class="iconfont icon-datas"></span>
              <span class="name" :title="item.name">xxx</span>             
              <!-- 节点进 -->
              <div  class="pane-port-list in">
                ......
              </div>
              <!-- 节点出 -->
              <div class="pane-port-list out">
                ......
              </div>
            </div>
          </body>
        </foreignObject>
    </g>